Fluid reservoir



FIG. 1 is a top perspective view of a fluid reservoir, showing an embodiment of our new design.

FIG. 2 is a bottom perspective view thereof.

FIG. 3 is a front elevational view thereof.

FIG. 4 is a rear elevational view thereof.

FIG. 5 is a left side elevational view thereof.

FIG. 6 is a right side elevational view thereof.

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

Stippling in the drawings represent the three-dimensional contours of the design, and is not intended to indicate surface decoration. The broken lines shown in the drawings depict portions of the fluid reservoir that form no part of the claimed design. 

CLAIM The ornamental design for a fluid reservoir, as shown and described. 